Writing instrument



FIG. 1 is a perspective view taken from the side and below showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a plan view thereof;

FIG. 7 is a perspective view taken from the side and below of another embodiment of the present invention;

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a left side elevational view of FIG. 7, the right side elevational view being a mirror image thereof;

FIG. 10 is a rear view of FIG. 7; and,

FIG. 11 is a plan view of FIG. 7.

The broken line showing of a writing tip in the figures is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a “writing instrument”, as shown and described. 